Function missing wil::reg::set_value_multistring_nothrow

I am able to see and use the following functions without any issues:

```
wil::reg::set_value_string_nothrow
wil::reg::set_value_multistring
wil::reg::try_get_value_multistring
```

However, I can only find the following function in the documentation and not in the codebase:
`wil::reg::set_value_multistring_nothrow`

Am I missing something or doing something wrong?